FXUS65 KREV 210750

AFDREV



Area Forecast Discussion

National Weather Service Reno NV

1250 AM PDT Sun Jun 21 2026



.KEY MESSAGES...

  

* Seasonal temperatures and dry conditions prevail across the 

  area for the first day of Astronomical Summer.



* Above average temperatures, and widespread moderate HeatRisk

  starting Monday through at least Thursday for western NV, with 

  typical afternoon breezes.



* Model ensembles are showing a ridge breakdown the end of the

  week, with an increase in winds and lower temperatures.



&&



.DISCUSSION...



* Today we'll have zonal flow over the region. This will translate

  into a sunny, quiet weather day with seasonal temperatures and

  typical westerly winds this afternoon. Otherwise, it's a great 

  day to be outdoors enjoying the first day of astronomical 

  summer!

 

* For the upcoming work week, ensembles all show a weak upper

  level ridge setting up over the western US. As a result,

  temperatures will once again increase back into the mid to upper

  90s for western NV, eastern Lassen, and the lower elevations in

  Mono County from Monday through at least Thursday. This will

  result in several days of widespread moderate, to localized

  Major HeatRisk. Temperatures this week for the eastern Sierra 

  communities will end up mostly in the 80s. 

  

* By Friday, ensembles are showing a breakdown of the upper ridge

  as another trough moves into the western US. While details on

  the exact path and strength of this trough are still low, it's

  worth noting that blended guidance is showing increasing winds

  throughout the region as well as 10-15% chances for showers near

  the Oregon border. This will result in fire weather concerns, 

  as well as impacts to aviation and outdoor recreation.

  -McKellar



&&



.AVIATION...



VFR conditions continue at all western NV and Sierra terminals. 

Typical west winds return in the afternoon to early evening with 

sustained 10-15 kts with gusts of 20-25 kts, then light and VRB

overnight in the morning. There is a low chance for patchy for 

for KTRK overnight. -McKellar



&&



.REV Watches/Warnings/Advisories...

NV...None.

CA...None.



&&



$$